Dear Shreyasee, I had exactly the same error message. I converted the pdf-files into plain textfiles and reran the command without any problems. I'm no expert but the problem must be with the readability of the filetype.
Kind regards Kutsal -- View this message in context: http://r.789695.n4.nabble.com/Invalid-input-error-in-tm-package-tp1082961p3322539.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
